Continuing with the cost assumptions of the previous problem.

(a) In general, when you observe a feature x, what is the average cost if you decide 0? What is it if you decide 1? (These should be dependent on x.)

(b) On the basis of these average costs, to minimize the average cost, when should you decide 0? When should you decide 1?

(c) If you use this decision rule, what is your average cost of making a decision?